Malicious PDF — malware analysis report

Static analysis result for SHA-256 592102576344a634…

MALICIOUS

PDF

34.4 KB Created: 2021-06-25 15:27:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 6294dc95a437954c817967dd0743d51c SHA-1: d49669c8c40074b2d7291c91f721d4c839cede5c SHA-256: 592102576344a6341e3b5fac799b5ebc55adbe6e8fa01f8a42e8ee284e878d48
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs that masquerade as "hacks" or "generators" for popular games, aiming to trick users into downloading malicious content. The PDF_SEO_LINK_FARM heuristic indicates a large number of these deceptive links were generated, and the ML_NYX_PDF_MALICIOUS score strongly suggests malicious intent. While no scripts were explicitly extracted, the embedded URLs themselves serve as the primary attack vector, likely leading to further malware downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://netcdn.co/app/431946152/cr7-hack-roblox-2021-game-hack
    • http://elibrary.smknesbu.sch.id/repository/is-there-a-way-to-get-free-robux_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/coin-master-free-spin-and-coin_GM406889139.pdf
    • http://elibrary.smknesbu.sch.id/repository/how-to-get-minecraft-pe-for-free_GM479516143.pdf
    • http://elibrary.smknesbu.sch.id/repository/coin-master-daily-free-spins-blogspot_GM406889139.pdf
    • http://elibrary.smknesbu.sch.id/repository/easy-roblox-today-hack_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/woman-roblox_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/roblox-place-view-bot-hack-fourme_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/free-roblox-generator-from-jake-paul_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/put-cheat-codes-roblox-bubblegum_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/how-to-get-free-pets-in-adopt-me-roblox_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/roblox-5x-coins-anime-cross-hack_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/videos-de-como-ser-hacker-en-roblox_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/how-to-change-your-name-on-roblox-for-free-2021_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/how-to-hack-any-player-in-roblox_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/how-to-coin-master-spin-hack_GM406889139.pdf
    • http://elibrary.smknesbu.sch.id/repository/coin-master-hack-android-2021_GM406889139.pdf
    • http://elibrary.smknesbu.sch.id/repository/free-roblox-clothes-codes_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/free-coins-and-spins-coin-master_GM406889139.pdf
    • http://elibrary.smknesbu.sch.id/repository/archery-master-3d-unlimited-coins-hack_GM406889139.pdf
    • http://elibrary.smknesbu.sch.id/repository/how-to-get-free-stuff-on-roblox_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002f75.bin
cb02caa953856a14bc3b74546d0c75b07d7ba67c349381039eb3e1b0cc423edf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2F75 22280 bytes
font_01_sfnt_off000060ea.bin
2eb6bb9a6841189c82fb8e2d3efad635d9dd4429fdc0bd6cd9dbbd819ca37fb9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60EA 19116 bytes

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